Trunking Sizing

Project Details

Trunking Section 1

S/N Cable CSA (mm²) Factor Quantity Total Factor Action
10.00.0
How It Works
Calculation Process:
  1. Cable Factor: Here predefined cable factor for Thermosetting BS7211 stranded are used as per Table E5 IET onsite guide.
  2. Total Factor per Cable: The app multiplies the cable factor by the quantity of each cable size.
  3. Sum of Factors: All individual cable factors are summed to get the total cable factor.
  4. Spare Capacity: The specified spare capacity percentage is applied to the total factor.
  5. Trunking Size Selection: The app compares the total factor (including spare capacity) with standard trunking size factors to recommend the appropriate size.
Standard Trunking Sizes:

50x50, 75x50, 75x75, 100x50, 100x75, 100x100, 150x50, 150x75, 150x100, 150x150, 225x100, 225x150, 225x225, 300x75, 300x100, 300x150, 300x300 mm

Note: The app provides recommendations based on calculations. Always consult with a qualified professional for final decisions on electrical installations.